Update docs/faq.rst
Update docs/faq.rst

Co-Authored-By: Mathias Goncalves <b3b16b33211400412d46537fbf2a81c5e4aa7037@gmail.com>
oesteban/fmriprep,poldracklab/fmriprep,poldracklab/fmriprep,oesteban/fmriprep,oesteban/fmriprep,poldracklab/preprocessing-workflow,poldracklab/preprocessing-workflow,poldracklab/fmriprep